Okla. Stat. tit. 11 § 36-217
Any property which is owned by the municipality, or county, or any board of education or school district shall be treated and considered the same as the property of other owners. The municipality, county, school district, or board of education within the district to be assessed may pay the total assessment against its property without interest within thirty (30) days from the date of the publication of the ordinance levying the assessment. In the event the assessment is not paid in full without interest within the thirty-day period, the municipality, county, school district or board of education shall annually provide, by the levy of taxes in a sufficient sum, for payment of the maturing installments of assessments and interest thereon.
Okla. Stat. tit. 11, § 36-217